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Thin Sheet Tester The model 3000T two-port coax tester measures insertion loss of thin sheets of shielding materials. The unit is quick and easy to use and does not require sample preparation. The tester can be furnished with calibration standards for m/e measurements of solid materials from approximately 1 MHz to 1 GHz.Damaskos Inc., Concordville, PA (610) 358-0200.

Radar Return Simulator Integrated Assembly The model 1663 radar return simulator assembly operates in Ku-band and is designed to provide a programmable phase and amplitude relationship between two channels to simulate radar return signals. The module interfaces with a waveguide manifold, which, in turn, interfaces with waveguide ports of the radar system. The unit contains two in-phase/quadrature (I/Q) vector modulators, five PIN diode switches, one PIN diode transfer switch, one high speed pulse modulator, two isolators, two couplers and one bandpass filter. The unit features better than 1° phase accuracy between channels, built-in test circuitry and an internal EPROM correction table that is used to calibrate out system errors. Size: 5.3" x 3.5" x 0.7".General Microwave Corp., Amityville, NY (516) 226-8900 ext. 291.

RF/IF Coaxial Switch Matrix The model 10840 RF/IF coaxial matrix is a switching unit that connects any 32 inputs to any combination of 32 outputs under RS-232 or IEEE-488 control. The unit's bandwidth of 5 to 250 MHz covers high frequency and VHF bands as well as the 70 to 160 MHz IF range. The system features unity gain at full fanout, which results in a high degree of versatility. Speed setup time up to 40 stored switching configurations may be recalled.Matrix Systems Corp., Calabasas, CA (818) 222-2301.